1. Joint Department of Medical Imaging, Division of Vascular and Interventional Radiology, University Health Network, Toronto, Ontario, Canada
2. Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
3. Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, Canada
4. Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada